.layout-north {}

.layout-south {
	text-align: center;
}

.layout-west {}

.layout-east {}

.layout-center {}

button {
	margin: 0.625rem;
	/* 过渡效果*/
	transition-property: width, height;
	transition-duration: 2s;
	-moz-transition-duration: 2s;
	/* Firefox 4 */
	-webkit-transition-duration: 2s;
	/* Safari and Chrome */
	-o-transition-duration: 2s;
	/* Opera */
}
